Midea MS9A-09HRDN1-MP0W - Outdoor Unit Error Display

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9.2 Outdoor unit error display
standby
operating
LED1
slow flashing
on
LED4
on
on
The picture of PCB above is only for reference.
LED 4 is a red light and for the PCB POWER display.
LED 1 is a yellow light. After power on, it will be slow flash when the unit is in standby and quick
flash(2.5Hz) if the unit has some problems.
LED 6(green) and LED5(red) are two lights controlled by the compressor drive chip. Below is
meanings for those lights.
No.
Problems
LED6
(Green)
LED5
(Red)
IU display
1
standby for normal
O
X
2
Operation normally
X
O
3
IPM malfunction or IGBT over-strong current protection
☆
X
P0
LED1
LED4 (red)
LED5 (red) & LED6 (green)